of san paulo



H. Tproee, or SANTA-ULO, BRAZIL.

Letters Patent No. 81,616, dated AS'eptemlrerl 1, 1868.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, I-I. T. FOGG, of San Paulo, Brazil, South America,have invented a. new and useful vImprovement in Dental Instruments; andI do hereby declare thatthe following is a full, clear, and exactdescription thereof', which will enable others skilled in the art tomake and use the same, reference being had to the accompanying drawings,forming a. part of this speciiication.

The present invention relates to anew and useful improvement in dentalund surgical instruments, which n re so constructed with1 adjustablehandles that a dentist or surgeon may carry a. number of instrumentswith him, with' one set of handles, v which shall be common to all, thusgreatly reducing the weight of metal he would otherwise be obliged tocarry, the construction of which will be understood from the following,reference being had tothe accompanying drawing, forming part of thisspecification.

Figure 1 represents a perspective view of a pair of forceps with myimproved handles attached: A

Figure 2 is a section through the line z x.

Similar letters of reference indicate corresponding parts.

In this case the forceps are made with stunted or short handles', a,which have :t-wedge-shaped dove-tail on their ends, which exactly ts a.Vrecess in the handle proper, b,so that itvcannot be drawn out by a.straight pull, and iu order to secure and stiffen the joint, the handleproper hns a metal slide or ferrule, c, attached toit by the pin d, asshown i-n tig. 1,n the accompanying drawing.

The handles proper are made soas to t either right or left, so that withone set of handles a person may carry a. number of instruments withoutthe necessity of carrying the unnecessary amount o'fmetal eontained'inthe instruments es they are now constructed.

I do not limit myself to using adjixstablc handles exclusively forldental instruments, but propose'using 'them lalso for surgicalinstruments.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

Adjustable handles for dental and other surgical instruments,constructed substantially in the manner and for the purpose herein shownand described. Y

The above specification of my invention signed by me, this 20th day ofDecember, 1867.

H. T. FOGG.

Witnesses:

C. D. DULLEY, CHAS. Run VIVALDI.

